D being derived from heterocyclic diamine

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C09B35/469

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CCHEMISTRY METALLURGY C09Paints, dyes C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES MORDANTS LAKES C09B35/00Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling

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C09B35/469D being derived from heterocyclic diamine

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Patents Grantslast 30 patents

Information Patent Grant
Water-soluble black trisazo dyestuffs
- Patent number 4,917,731
- Issue date Apr 17, 1990
- Wolfgang Bauer
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Water-soluble trisazo 8-amino-naphthol-1 dyes
- Patent number 4,033,945
- Issue date Jul 5, 1977
- Cassella Farbwerke Mainkur Aktiengesellschaft
- Wolfgang Bauer
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Asymmetrical frisazo dyestuffs derived from diazotized 2,7-diamino-...
- Patent number 3,966,703
- Issue date Jun 29, 1976
- Bayer Aktiengesellschaft
- Wolf-Eckhard Bleck
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...

Patents Applicationslast 30 patents